flex学习笔记1

1 dynamic change the style on runtime
 

as 代码

import mx.styles.StyleManager;
import mx.events.StyleEvent;

var styleEvent:IEventDispatcher = StyleManager.loadStyleDeclarations( name, true );

the name parameter is a swf file that is compiled by a css file        
 etc:'style1.swf'
2 alert function

as 代码

import mx.controls.Alert;
Alert.show('');

3 reflection invoke
my class

as 代码

package com.firebow
{
    import mx.controls.Alert;
    public class Caller
    {
        public function show(str:String="abc",other:String=null):void
        {
            Alert.show(str);
        }
    }
}

invoke method show

as 代码

var classReference:Class = flash.utils.getDefinitionByName("com.firebow.Caller") as Class;
                var instance:Object=new classReference();
                var args:Array=new Array();
                args[0]="abc";
                args[1]="null";
                instance["show"].apply(instance,args);

you can use the pranaframework,it supply some packages ,include reflection
for example

as 代码

var type:Type =Type.forInstance(instance);

trace(type.name); // outputs "MyClass"

trace(type.fullName); // outputs "com.domain::MyClass"

trace(type.methods);

trace(type.staticConstants);

trace(type.staticVariables);

trace(type.constants);

trace(type.variables);

for(var i:int=0;i
{
    var m:Method=type.methods[i];
    trace("method:"+m.name);
    if(m.name=="show"){
        m.invoke(instance,"KKK");
    }
}

you can get the framework on sourceforge.net/projects/prana/